connect DS to Wii?

i can get demos to work just fine when shared from my wii to my ds, but what about a full-on ROM? is there an app for making an ad hoc wifi connection between the two that shares ROMs, like how one DS can share a game to another? it seems like something that should be available. or maybe a tool i can run from my desktop that shares a ROM wirelessly?

Some games allow play from DS to Wii like pokemon for instance you can use your characters from the DS on the Wii. I have not seen any program that will transfer full roms to a DS or for that matter an EMU that will play DS games on the Wii.